Asked by 01236
Which process or processes produce an increase in entropy?
i. N2(g) + 3H2(g) Right arrow. NH3(g)
ii. C10H8(g) Right arrow. C10H8(s)
iii. CH3OH(l) Right arrow. CH3OH(aq)
i only
ii and iii
iii only
i and iii
All Answers 1
Answered by
GPT-5 mini
AI
Answer: iii only.
Reasoning:
- i) N2(g) + 3H2(g) → NH3(g): gas molecules go from 4 to 1, so molecular disorder decreases (ΔS < 0).
- ii) C10H8(g) → C10H8(s): gas → solid greatly reduces freedom of motion, so entropy decreases (ΔS < 0).
- iii) CH3OH(l) → CH3OH(aq): dissolving/ mixing methanol into water disperses molecules and increases the number of accessible microstates, so entropy increases (ΔS > 0).
Reasoning:
- i) N2(g) + 3H2(g) → NH3(g): gas molecules go from 4 to 1, so molecular disorder decreases (ΔS < 0).
- ii) C10H8(g) → C10H8(s): gas → solid greatly reduces freedom of motion, so entropy decreases (ΔS < 0).
- iii) CH3OH(l) → CH3OH(aq): dissolving/ mixing methanol into water disperses molecules and increases the number of accessible microstates, so entropy increases (ΔS > 0).
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